<!DOCTYPE html>
<html lang='en'>

<head>
    <meta charset='UTF-8'>
    <meta http-equiv='X-UA-Compatible' content='IE=edge'>
    <meta name='viewport' content='width=device-width, initial-scale=1.0'>
    <title>Document</title>
    <script src='../vue.js'></script>
</head>

<body>
    <div id='app'>
        <div style="width: 100px;height:100px;" :style="{background:cool}"></div>
        <div :style="arr"></div>
        <div :style="divStyle"></div>
    </div>
    <script>
        Vue.config.productionTip = false;
        const vm = new Vue({
            el: '#app',
            data() {
                return {
                   divStyle:{
                    width:'200px',
                    height:'200px',
                    background:'pink'
                   },
                   cool:'red',
                   arr:[
                    {width:'100px'},
                    {height:'100px'},
                    {background:'blue'}
                   ]

                }
            }
        })
    </script>
</body>

</html>